Q: What are the prime factors of the number 723,044,672?

 A: 2, 7, 211, 7649

Why are those the prime factors of the number 723,044,672?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 723,044,672

723,044,672
Factor Arrows
2361,522,336
Factor Arrows
2180,761,168
Factor Arrows
290,380,584
Factor Arrows
245,190,292
Factor Arrows
222,595,146
Factor Arrows
211,297,573
Factor Arrows
71,613,939
Factor Arrows
2117,649

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 211, 7649

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 211 x 7,649 = 723,044,672

This can also be written as 26 x 71 x 2111 x 7,6491 = 723,044,672

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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